RESUMO
ABSTRACT In this research, the effect of the lactic starter culture, the fermentation time, the incubation temperature and the percentage of fat on the firmness and consistency of a fermented milk drink was evaluated through physicochemical characteristics of total acidity, pH, syneresis and flow behavior. The purpose was to find the best formulation that extends the shelf life of yogurt, leading to an improvement in the manufacturing process of a local dairy company in Barrancabermeja (Santander, Colombia). Quality criteria were evaluated by means of the percentage of acidity and pH of the yogurt, as well as its syneresis and rheological parameters during a storage time of 24 hours and 7 days in refrigeration. Acceptable quality parameters were obtained for the yogurt prepared with an inoculum concentration of 2%, an incubation temperature of 40°C and an incubation time of 150 minutes. In addition, better properties of firmness and consistency were found, with absence of syneresis and viscosity in the accepted range, for this dairy product.
RESUMEN En esta investigación, se evaluó el efecto del cultivo iniciador láctico, el tiempo de fermentación, la temperatura de incubación y el porcentaje de grasa en la firmeza y consistencia de una bebida de leche fermentada, a través de las características fisicoquímicas de acidez total, pH, sinéresis y comportamiento de flujo. El propósito fue encontrar la mejor formulación que extienda la vida útil del yogur, lo que lleva a un perfeccionamiento del proceso de fabricación de una empresa local de productos lácteos en Barrancabermeja (Santander, Colombia). Se evaluaron criterios de calidad por medio del porcentaje de acidez y pH del yogurt, así como su sinéresis y parámetros reológicos, durante un tiempo de almacenamiento de 24 horas y de 7 días en refrigeración. Se obtuvieron parámetros de calidad aceptables para el yogurt, preparado con una concentración del inóculo de 2%, una temperatura de incubación de 40°C y un tiempo de incubación de 150 minutos. Además, se encontraron mejores propiedades de firmeza y de consistencia, con ausencia de sinéresis y viscosidad en el rango aceptado, para este producto lácteo.
RESUMO
End Stage Renal Disease patients undergo profound hemodynamic changes during hemodialysis treatments which are now recognized as a marker for increased risk of morbidity and mortality. Development of intradialytic hypotension or hypertension are a common clinical problem in this population with an incidence of up to 20%. We performed a retrospective review of 49 Hispanic patients receiving ambulatory hemodialysis during a period of 6 months to ascertain the development of aforementioned intradialytic events. Clinical data examined the association of these events to mortality and their relationship to antihypertensive medications and cardiomegaly. The prevalence of intradialytic hypotension was 38.78%, hypertension 16.33% individually and both taking place 16.33%. Taken together, the prevalence of these intradialytic events was 71.43% in our Hispanic population. A significant association was found between mortality and Beta blockers (BB)(P=0.044), Calcium channel blockers (CCB) (P=0.023), cardiomegaly (P=0.044), and intradialytic events (P=0.035). Odds ratio of multiple variables dis- closed that dependent variable death decreased in probability with the use of BB by an estimate of 73% and with the use of CCB by 74.8%. On the other hand, odds of developing the dependent variable death increased by 74.5% if the patients developed intradialytic events. Similarly, the odds of developing cardiomegaly in the living group increased by 70%. A logistic regression of multiple variables found that the probability of developing the dependent condition of death increases by almost 2.896 times if intradialytic events are present and that there is a 58.9% inferred causality. It is concluded that intradialytic hyper- tension and hypotension are major risk factors for mortality in dialysis patients. The use of BB and CCB may be protetive to avoid the risk of mortality in these patients.
Assuntos
Hipertensão/epidemiologia , Hipotensão/epidemiologia , Falência Renal Crônica/terapia , Diálise Renal , Antagonistas Adrenérgicos beta/uso terapêutico , Assistência Ambulatorial/métodos , Bloqueadores dos Canais de Cálcio/uso terapêutico , Feminino , Humanos , Hipertensão/etiologia , Hipertensão/mortalidade , Hipotensão/etiologia , Hipotensão/mortalidade , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Prevalência , Porto Rico , Estudos Retrospectivos , Fatores de RiscoRESUMO
Puerto Rico is one of the most prevalent areas covered by Medicare in need of renal replacement therapy for which interventional procedures are performed. A cumulative analysis of this management is reported in patients during the period between June 2007 and August 2010. Experience accumulated with 3755 surgical patients revealed that 58% had intravascular catheters, 28% had arteriovenous fistulas, 15% had arteriovenous grafts, and 2% without vascular access. Procedures performed in these patients were: catheter introduction in 1990 cases (33%), angioplasty in 751 cases (20%), angiography in 450 cases (12%), thrombectomy in 413 cases (11%) and venous mapping in 151 cases (4%). The success rates of these procedures were evaluated by analysis of the Society of Interventional Radiology (SIR) criteria for Lifeline Vascular Access. Using SIR definition of success rate for at least one session that includes "declots", placement of catheters and angioplasty, our results revealed an average of 98.2% overall success rate greater than the standard value KDOQI/SIR (> 85% ). This study has documented for four years the success rate of Vascular Interventional Nephrology Center at Auxilio Mutuo Hospital. In order to maintain this success rate is necessary to further evaluate its effectiveness and, most importantly, the development of an educational program for vascular access in patients with chronic kidney disease prior to placement in dialysis units.